My government is doing all it can to protect the EU's external border in the best possible way, but that is not easy considering the sea, the islands and the proximity of the Turkish coast, Dendias told a press conference after meeting his Croatian counterpart Gordan Grlic Radman.
He added that he expected huge progress to be made in this regard in the coming months.
According to the United Nations refugee agency UNHCR, last year 59,726 migrants arrived on the Greek islands, most of them on Lesbos, Chios and Samos, which are close to the Turkish coast.
Many of the migrants reach Croatia on their way from Greece to Western Europe, using the Western Balkan route.
Dendias said that migration is the most important issue which Croatia, as the country that currently holds the EU presidency, takes very seriously.
He and Grlic Radman discussed how to create a better environment in the EU to cope with the phenomenon of migration, which they said would not disappear. Dendias said that the common European asylum policy and EU readmission rules could be of great help.